Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 5 - Section 5.4 - Adding and Subtracting Polynomials - Exercise Set: 82

Answer

$3y^5+7y^5-2y^2-y^2=10y^5-3y^2$

Work Step by Step

Organise pairs of coefficients such that the coefficients will correspond to $10$ and $-3$. $3y^\square+7y^\square-2y^\square-y^\square=10y^5-3y^2$ $3+7=10$ $-2-1=-3$. So $3y^5+7y^5=10y^5$ $-2y^2-y^2=-3y^2$ $3y^5+7y^5-2y^2-y^2=10y^5-3y^2$.
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